Electrode, method for manufacturing electrode, biplate assembly and bipolar battery

Abstract

An electrode for a biplate assembly includes an active material made from a compressed powder 11 , and a non-metal carrier 10 . A biplate assembly 20 includes electrodes 27, 28 each having a non-metal carrier 10 . A method is disclosed for manufacturing an electrode 13 having a non-metal carrier 10 . An apparatus 30 is disclosed for manufacturing such an electrode 13 . A bipolar battery includes at least one such an electrode 13 . The non-metal carrier 10 is preferably a non-conductive carrier.

What is claimed is: 
     
       1. An electrode for a biplate assembly in a bipolar battery, said electrode comprising:
 an active material made from an active powder; and 
 a non-metal carrier; 
 wherein said electrode is formed by compressing said active powder onto said non-metal carrier to create said active material, said non-metal carrier is provided with a structure that allows at least some amount of the active powder to migrate completely through the non-metal carrier when the electrode is formed, said non-metal carrier being a structural part of the electrode; 
 wherein said non-metal carrier is an electrically non-conductive carrier; and 
 wherein said non-metal carrier has a random structure of polymer fibers. 
 
     
     
       2. The electrode according to  claim 1 , wherein the active material mainly is arranged on one side of the non-metal carrier, whereby said non-metal carrier is arranged substantially on one side of the electrode. 
     
     
       3. The electrode according to  claim 1 , wherein the electrode has a thickness in the range of 0.05 to 1.3 mm. 
     
     
       4. The electrode according to  claim 3 , wherein the electrode has a thickness in the range of 0.25 to 0.90 mm. 
     
     
       5. A biplate assembly for a bipolar battery comprising:
 a biplate; 
 a positive electrode including a positive active material made from a positive active powder; and 
 a negative electrode including a negative active material made from a negative active powder, said negative active material being opposite to said positive active material; 
 wherein each electrode includes a non-metal carrier being a structural part of the electrode, and each electrode is formed by compressing said positive or negative active powder onto said non-metal carrier to create said positive or negative active material, said non-metal carrier is provided with a structure that allows at least some amount of the positive or negative active powder to migrate completely through the non-metal carrier when the electrode is formed, and said non-metal carrier has a random structure of polymer fibers. 
 
     
     
       6. The biplate assembly according to  claim 5 , wherein the non-metal carrier does not contact with the biplate. 
     
     
       7. The biplate assembly according to  claim 5 , wherein the biplate assembly further comprises a separator provided with an electrolyte, said separator being in contact with the non-metal carrier. 
     
     
       8. The biplate assembly according to  claim 5 , wherein the non-metal carrier is an electrically non-conductive carrier. 
     
     
       9. A bipolar battery comprising:
 a housing; 
 a positive end terminal having a positive electrode; 
 a negative end terminal having a negative electrode; 
 at least one biplate assembly comprising a negative electrode, a biplate, and a positive electrode; and 
 a separator containing electrolyte arranged between adjacent positive and negative electrodes; 
 wherein at least one of said positive and said negative electrodes in said at least one biplate assembly includes a non-metal carrier being a structural part of the electrode, which is formed by compressing a positive or negative active powder onto said non-metal carrier to create a positive or negative active material, said non-metal carrier is provided with a structure that allows at least some amount of the positive or negative active powder to migrate completely through the non-metal carrier when the electrode is formed, and said non—metal carrier has a random structure of polymer fibers. 
 
     
     
       10. The bipolar battery according to  claim 9 , wherein the non-metal carrier does not contact with the biplate in the biplate assembly. 
     
     
       11. The bipolar battery according to  claim 9 , wherein said separator is in contact with the non-metal carrier of the adjacently arranged electrode. 
     
     
       12. The bipolar battery according to  claim 9 , wherein the non-metal carrier is an electrically non-conductive carrier.